Section 3.3 Volcanic Landforms

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Vocabulary

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Shield Volcano: lava flows gradually build a wide, gently sloping mountain

Cinder Cone:steep,cone-shaped hill or mountain

Composite Volcanoes:are tall,cone-shaped mountains in which layer of lava alternate with layers of ash

Caldera:the huge hole left by the collapse of a volcanic mountain

Volcanic neck:forms when magma hardens in a volcano's pipe

Dike: magma that hardens that forces itself across rock layers

Still: when magma squeezes between layers of rock

Batholith: a mass of rock formed when a large amount of magma cools inside the crust

Outline

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Landforms Form Lava and Ash

• shield volcanoes
• cinder cone volcanoes
• composite volcanoes
• lava plateaus
• calderas

Soils from Lava and Ash

• good soil
  • plant growth

Landforms from Magma

• volcanic neck
• dike
• sill
• batholiths
• dome mountains